diff --git a/core/Controller/TwoFactorChallengeController.php b/core/Controller/TwoFactorChallengeController.php
index c19cf52327..48dea06281 100644
--- a/core/Controller/TwoFactorChallengeController.php
+++ b/core/Controller/TwoFactorChallengeController.php
@@ -24,6 +24,8 @@
 namespace OC\Core\Controller;
 
 use OC\Authentication\TwoFactorAuth\Manager;
+use OC_User;
+use OC_Util;
 use OCP\AppFramework\Controller;
 use OCP\AppFramework\Http\RedirectResponse;
 use OCP\AppFramework\Http\TemplateResponse;
@@ -67,7 +69,7 @@ class TwoFactorChallengeController extends Controller {
 	 * @return string
 	 */
 	protected function getLogoutAttribute() {
-		return \OC_User::getLogoutAttribute();
+		return OC_User::getLogoutAttribute();
 	}
 
 	/**
@@ -143,7 +145,7 @@ class TwoFactorChallengeController extends Controller {
 			if (!is_null($redirect_url)) {
 				return new RedirectResponse($this->urlGenerator->getAbsoluteURL(urldecode($redirect_url)));
 			}
-			return new RedirectResponse($this->urlGenerator->linkToRoute('files.view.index'));
+			return new RedirectResponse(OC_Util::getDefaultPageUrl());
 		}
 
 		$this->session->set('two_factor_auth_error', true);
diff --git a/tests/Core/Controller/TwoFactorChallengeControllerTest.php b/tests/Core/Controller/TwoFactorChallengeControllerTest.php
index 08d8dd1452..28f16241e2 100644
--- a/tests/Core/Controller/TwoFactorChallengeControllerTest.php
+++ b/tests/Core/Controller/TwoFactorChallengeControllerTest.php
@@ -39,13 +39,13 @@ class TwoFactorChallengeControllerTest extends TestCase {
 	protected function setUp() {
 		parent::setUp();
 
-		$this->request = $this->getMock('\OCP\IRequest');
+		$this->request = $this->getMockBuilder('\OCP\IRequest')->getMock();
 		$this->twoFactorManager = $this->getMockBuilder('\OC\Authentication\TwoFactorAuth\Manager')
 			->disableOriginalConstructor()
 			->getMock();
-		$this->userSession = $this->getMock('\OCP\IUserSession');
-		$this->session = $this->getMock('\OCP\ISession');
-		$this->urlGenerator = $this->getMock('\OCP\IURLGenerator');
+		$this->userSession = $this->getMockBuilder('\OCP\IUserSession')->getMock();
+		$this->session = $this->getMockBuilder('\OCP\ISession')->getMock();
+		$this->urlGenerator = $this->getMockBuilder('\OCP\IURLGenerator')->getMock();
 
 		$this->controller = $this->getMockBuilder('OC\Core\Controller\TwoFactorChallengeController')
 			->setConstructorArgs([
@@ -64,7 +64,7 @@ class TwoFactorChallengeControllerTest extends TestCase {
 	}
 
 	public function testSelectChallenge() {
-		$user = $this->getMock('\OCP\IUser');
+		$user = $this->getMockBuilder('\OCP\IUser')->getMock();
 		$providers = [
 			'prov1',
 			'prov2',
@@ -88,7 +88,7 @@ class TwoFactorChallengeControllerTest extends TestCase {
 	}
 
 	public function testShowChallenge() {
-		$user = $this->getMock('\OCP\IUser');
+		$user = $this->getMockBuilder('\OCP\IUser')->getMock();
 		$provider = $this->getMockBuilder('\OCP\Authentication\TwoFactorAuth\IProvider')
 			->disableOriginalConstructor()
 			->getMock();
@@ -130,7 +130,7 @@ class TwoFactorChallengeControllerTest extends TestCase {
 	}
 
 	public function testShowInvalidChallenge() {
-		$user = $this->getMock('\OCP\IUser');
+		$user = $this->getMockBuilder('\OCP\IUser')->getMock();
 
 		$this->userSession->expects($this->once())
 			->method('getUser')
@@ -150,7 +150,7 @@ class TwoFactorChallengeControllerTest extends TestCase {
 	}
 
 	public function testSolveChallenge() {
-		$user = $this->getMock('\OCP\IUser');
+		$user = $this->getMockBuilder('\OCP\IUser')->getMock();
 		$provider = $this->getMockBuilder('\OCP\Authentication\TwoFactorAuth\IProvider')
 			->disableOriginalConstructor()
 			->getMock();
@@ -167,17 +167,13 @@ class TwoFactorChallengeControllerTest extends TestCase {
 			->method('verifyChallenge')
 			->with('myprovider', $user, 'token')
 			->will($this->returnValue(true));
-		$this->urlGenerator->expects($this->once())
-			->method('linkToRoute')
-			->with('files.view.index')
-			->will($this->returnValue('files/index/url'));
 
-		$expected = new \OCP\AppFramework\Http\RedirectResponse('files/index/url');
+		$expected = new \OCP\AppFramework\Http\RedirectResponse(\OC_Util::getDefaultPageUrl());
 		$this->assertEquals($expected, $this->controller->solveChallenge('myprovider', 'token'));
 	}
 
 	public function testSolveChallengeInvalidProvider() {
-		$user = $this->getMock('\OCP\IUser');
+		$user = $this->getMockBuilder('\OCP\IUser')->getMock();
 
 		$this->userSession->expects($this->once())
 			->method('getUser')
@@ -197,7 +193,7 @@ class TwoFactorChallengeControllerTest extends TestCase {
 	}
 
 	public function testSolveInvalidChallenge() {
-		$user = $this->getMock('\OCP\IUser');
+		$user = $this->getMockBuilder('\OCP\IUser')->getMock();
 		$provider = $this->getMockBuilder('\OCP\Authentication\TwoFactorAuth\IProvider')
 			->disableOriginalConstructor()
 			->getMock();